Use this Energy Requirement Calculator to calculate the energy
requirement for grazing activity. Enter the data into the table and
then click the Calculate Grazing Activity Energy Cost button. The results will be
displayed in the table at the bottom of the page.

1.

Enter grazing plus walking time in hours

2.

Enter diet quality as total digestible nutrient concentration or organic matter digestibility in %oruse converter to the right.

To convert from English to metric
system,enter your values here.They will be automatically
entered into the table to the left.

miles

ME (MJ) to TDN

Grazing factor (multiplied by the ME requirement for maintenance to adjust for the grazing activity energy cost):

Projections of the grazing activity energy cost are based on factors thought to influence or be related to this loss of energy, and are ones that may be fairly easy to estimate in the field. However, inadequate data were available to evaluate this system. Nonetheless, perhaps they may have some utility to account for the considerable use of energy in some grazing conditions until further experimentation is conducted. For simplicity, the grazing activity energy cost is expressed relative to the maintenance energy requirement. Therefore, these values are multiplied by the maintenance ME requirement and added to it, or the grazing activity energy cost plus 1 can be multiplied by the ME requirement for maintenance in a confinement setting.